Bus



FIG. 1 is a front elevational view of a bus;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a top/front/right perspective view thereof; and,

FIG. 7 is a top/rear/right perspective view thereof.

The broken lines in the drawings illustrate portions of the bus that do not form part of the claimed design. 

CLAIM We claim the ornamental design for a bus, as shown and described. 